CVE-2006-6691 in Shopping Cart
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Valdersoft Shopping Cart 3.0 and earlier allow remote attackers to execute arbitrary PHP code via a URL in the commonIncludePath parameter to (1) admin/include/common.php, (2) include/common.php, or (3) common_include/common.php.
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Analysis
by VulDB Data Team • 12/21/2024
The vulnerability identified as CVE-2006-6691 represents a critical remote file inclusion flaw affecting Valdersoft Shopping Cart versions 3.0 and earlier. This vulnerability resides in the application's handling of user-supplied input within the commonIncludePath parameter, which is processed in three distinct files: admin/include/common.php, include/common.php, and common_include/common.php. The flaw stems from insufficient input validation and sanitization mechanisms that permit attackers to inject malicious URLs directly into the application's include functionality, thereby enabling arbitrary code execution.
This vulnerability maps directly to CWE-88, known as "Improper Neutralization of Argument Delimiters in a Command," and CWE-94, "Improper Control of Generation of Code ('Code Injection')." The root cause lies in the application's failure to properly validate or sanitize the commonIncludePath parameter before using it in include or require statements. When an attacker crafts a malicious URL and passes it through this parameter, the application treats it as a legitimate file path and attempts to include it, effectively executing any PHP code contained within the remote resource. This represents a classic remote code execution vulnerability that allows attackers to gain unauthorized control over the affected system.
The operational impact of this vulnerability is severe and multifaceted. Attackers can leverage this flaw to execute arbitrary PHP code on the target server, potentially leading to complete system compromise. The vulnerability enables attackers to upload and execute malicious payloads, establish backdoors, or perform data exfiltration from the compromised system. Furthermore, the attack surface extends beyond immediate code execution to include potential privilege escalation and lateral movement within network environments. Organizations using affected versions of Valdersoft Shopping Cart face significant risk of unauthorized access, data breaches, and potential system infiltration that could affect customer data and business operations. The vulnerability also aligns with ATT&CK technique T1190, "Exploit Public-Facing Application," and T1059.007, "Command and Scripting Interpreter: PHP," demonstrating how attackers can exploit web application flaws to execute malicious code.
Mitigation strategies for CVE-2006-6691 require immediate action to address the core vulnerability. Organizations should upgrade to a patched version of Valdersoft Shopping Cart, as the vulnerability has been resolved in subsequent releases. Until an upgrade is possible, administrators should implement input validation and sanitization measures, specifically ensuring that all user-supplied input to the commonIncludePath parameter is properly validated against a whitelist of acceptable values. The application should be configured to use absolute paths rather than allowing relative or user-supplied paths in include statements. Additionally, implementing proper access controls and network segmentation can help limit the impact of potential exploitation. Security monitoring should be enhanced to detect suspicious include patterns and unauthorized file access attempts. According to NIST guidelines for secure coding practices, this vulnerability underscores the importance of input validation and the principle of least privilege in preventing remote code execution attacks. The vulnerability also highlights the necessity of regular security assessments and vulnerability scanning to identify and remediate similar flaws in web applications.